Unmet Need: Effective strategies for PFA remediation.
PFAs have been manufactured and used globally in industry because of their properties including high stability, low surface tension, oil and water repellency. However, PFAs have their downside because of their bioaccumulation and potential toxicity to wildlife and humans. Adsorption is an effective treatment for PFAs remediation but currently used adsorbents like activated carbon require a very long time to process. Other strategy like Ion exchange is quite expensive. There is a need to find effective yet cheaper technology to deal with this problem.
The Technology: Use of Modified Kraft Lignin as an adsorbent for PFAs.
Researchers at WSU have found a novel and effective lignin-based adsorbent for PFA removal. They showed that the lignin derived adsorbent shows high adsorption efficiency, fast adsorption and regeneration kinetic, and high regeneration efficiency for removing PFAS from contaminated water.
• Water purification, removal of harmful organic compounds.
• This adsorbent can adsorb over 90% of both long-chain PFAS and short-chain PFAS, in less than 10 min.
• Has high regeneration efficiency of over 95%.
• Much cheaper option as compared to currently available adsorbents.
Provisional patent filed